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https://www.readbyqxmd.com/read/29671359/current-evidence-linking-diet-to-gut-microbiota-and-brain-development-and-function
#1
Florencia Ceppa, Andrea Mancini, Kieran Tuohy
The gut:brain axis is emerging as an important information highway linking the foods we eat with neurophysiological development and functions. Some gut microorganisms have shown to alleviate anxiety and depression, improve cognitive performance and play a role in brain development in early life. However, most studies were conducted in laboratory animals and these findings await confirmation in carefully designed human interventions. Similarly, little attention has been given to how diet:microbe interactions within the gut can impact on neurotransmitter production or their subsequent biological effects within the nervous system...
April 19, 2018: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/29669514/identification-of-two-different-chemosensory-pathways-in-representatives-of-the-genus-halomonas
#2
Ana Florencia Gasperotti, María Victoria Revuelta, Claudia Alicia Studdert, María Karina Herrera Seitz
BACKGROUND: Species of the genus Halomonas are salt-tolerant organisms that have a versatile metabolism and can degrade a variety of xenobiotic compounds, utilizing them as their sole carbon source. In this study, we examined the genome of a Halomonas isolate from a hydrocarbon-contaminated site to search for chemosensory genes that might be responsible for the observed chemotactic behavior of this organism as well as for other responses to environmental cues. RESULTS: Using genome-wide comparative tools, our isolate was identified as a strain of Halomonas titanicae (strain KHS3), together with two other Halomonas strains with available genomes that had not been previously identified at a species level...
April 18, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29668902/distinct-amino-acid-residues-confer-one-of-three-udp-sugar-substrate-specificities-in-acinetobacter-baumannii-pglc-phosphoglycosyltransferases
#3
Christian M Harding, M Florencia Haurat, Evgeny Vinogradov, Mario F Feldman
Acinetobacter baumannii is an opportunistic human pathogen with the highest reported rates of multidrug resistance among Gram-negative pathogens. The capsular polysaccharide of A. baumannii is considered one of its most significant virulence factors providing resistance against complemented-mediated killing. Capsule synthesis in A. baumannii is usually initiated by the phosphoglycosyltransferase PglC. PglC transfers a phosphosugar from a nucleotide diphosphate-sugar to a polyprenol phosphate generating a polyprenol diphosphate-linked monosaccharide...
April 13, 2018: Glycobiology
https://www.readbyqxmd.com/read/29645089/nitrogen-enrichment-suppresses-other-environmental-drivers-and-homogenizes-salt-marsh-leaf-microbiome
#4
Pedro Daleo, Juan Alberti, Ari Jumpponen, Allison Veach, Florencia Ialonardi, Oscar Iribarne, Brian Silliman
Microbial community assembly is affected by a combination of forces that act simultaneously, but the mechanisms underpinning their relative influences remain elusive. This gap strongly limits our ability to predict human impacts on microbial communities and the processes they regulate. Here, we experimentally demonstrate that increased salinity stress, food web alteration and nutrient loading interact to drive outcomes in salt marsh fungal leaf communities. Both salinity stress and food web alterations drove communities to deterministically diverge, resulting in distinct fungal communities...
April 12, 2018: Ecology
https://www.readbyqxmd.com/read/29622899/-ethics-in-clinical-trials-designs-and-alternative-methods
#5
Carla Saenz, Florencia Luna, Sofía P Salas, Julio Arturo Canario, Jackeline Bravo Chamorro, Ricardo Palacios, Estela Quiroz, Patricia Saidón, Bertha María Villela
No abstract text is available yet for this article.
January 2018: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/29622588/modeling-the-transition-from-decompensated-to-pathological-hypertrophy
#6
Florencia Pascual, Jonathan C Schisler, Trisha J Grevengoed, Monte S Willis, Rosalind A Coleman
BACKGROUND: Long-chain acyl-CoA synthetases (ACSL) catalyze the conversion of long-chain fatty acids to fatty acyl-CoAs. Cardiac-specific ACSL1 temporal knockout at 2 months results in a shift from FA oxidation toward glycolysis that promotes mTORC1-mediated ventricular hypertrophy. We used unbiased metabolomics and gene expression analyses to examine the early effects of genetic inactivation of fatty acid oxidation on cardiac metabolism, hypertrophy development, and function. METHODS AND RESULTS: Global cardiac transcriptional analysis revealed differential expression of genes involved in cardiac metabolism, fibrosis, and hypertrophy development in Acsl1 H-/- hearts 2 weeks after Acsl1 ablation...
April 5, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29615553/dynamic-tissue-rearrangements-during-vertebrate-eye-morphogenesis-insights-from-fish-models
#7
REVIEW
Florencia Cavodeassi
Over the last thirty years, fish models, such as the zebrafish and medaka, have become essential to pursue developmental studies and model human disease. Community efforts have led to the generation of wide collections of mutants, a complete sequence of their genomes, and the development of sophisticated genetic tools, enabling the manipulation of gene activity and labelling and tracking of specific groups of cells during embryonic development. When combined with the accessibility and optical clarity of fish embryos, these approaches have made of them an unbeatable model to monitor developmental processes in vivo and in real time...
February 28, 2018: Journal of Developmental Biology
https://www.readbyqxmd.com/read/29610286/immunotherapy-for-pancreatic-cancer-more-than-just-a-gut-feeling
#8
Erick Riquelme, Anirban Maitra, Florencia McAllister
<b/> Development of pancreatic cancer in spontaneous murine models is associated with enrichment of specific strains of gut and intratumoral bacteria that induce a tolerogenic immunosuppressive microenvironment favoring cancer progression and resistance to immunotherapies. Ablation of the microbiome with antibiotics reshapes the tumor microenvironment, inducing T-cell activation, improving immune surveillance, and increasing sensitivity to immunotherapy in established tumors. Cancer Discov; 8(4); 386-8...
April 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29606976/association-of-weight-loss-with-improved-disease-activity-in-patients-with-rheumatoid-arthritis-a-retrospective-analysis-using-electronic-medical-record-data
#9
David J Kreps, Florencia Halperin, Sonali P Desai, Zhi Z Zhang, Elena Losina, Amber T Olson, Elizabeth W Karlson, Bonnie L Bermas, Jeffrey A Sparks
Objective: To evaluate the association between weight loss and rheumatoid arthritis (RA) disease activity. Methods: We conducted a retrospective cohort study of RA patients seen at routine clinic visits at an academic medical center, 2012-2015. We included patients who had ≥2 clinical disease activity index (CDAI) measures. We identified visits during follow-up where the maximum and minimum weights occurred and defined weight change and CDAI change as the differences of these measures at these visits...
2018: International Journal of Clinical Rheumatology
https://www.readbyqxmd.com/read/29604293/immune-cell-production-of-interleukin-17-induces-stem-cell-features-of-pancreatic-intraepithelial-neoplasia-cells
#10
Yu Zhang, Michelle Zoltan, Erick Riquelme, Hanwen Xu, Ismet Sahin, Susana Castro-Pando, Maria Fernanda Montiel, Kyle Chang, Zhengyu Jiang, Jianhua Ling, Sonal Gupta, William Horne, Melissa Pruski, Huamin Wang, Shao-Cong Sun, Guillermina Lozano, Paul Chiao, Anirban Maitra, Steven D Leach, Jay K Kolls, Eduardo Vilar Sanchez, Timothy C Wang, Jennifer M Bailey, Florencia McAllister
BACKGROUND & AIMS: Little is known about how the immune system affects stem cell features of pancreatic cancer cells. Immune cells that produce interleukin 17 A (IL17A) in the chronically inflamed pancreas (chronic pancreatitis) contribute to PanIN initiation and progression. We investigated the effects of IL17A signaling exerts on pancreatic cancer progenitor cells and the clinical relevance of this phenomena. METHODS: We performed studies with Mist1Cre;LSLKras;Rosa26mTmG (KCiMist ;G) and Kras(G12D); Trp53(R172H); Pdx1-Cre (KPC) mice (which upon tamoxifen induction spontaneously develop pancreatic intraepithelial neoplasias, PanINs) and control littermates...
March 28, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29596527/influenza-virus-16-years-experience-of-clinical-epidemiologic-patterns-and-associated-infection-factors-in-hospitalized-children-in-argentina
#11
Angela Gentile, Maria Florencia Lucion, Maria Del Valle Juarez, Ana Clara Martinez, Viviana Romanin, Julia Bakir, Mariana Viegas, Alicia Mistchenko
BACKGROUND: Influenza is an important cause of acute lower respiratory tract infection (aLRTI), hospitalization, and mortality in children. This study aimed to describe the clinical and epidemiologic patterns and infection factors associated with influenza, and compare case features of influenza A and B. METHODS: In a prospective, cross-sectional study, patients admitted for aLRTI, between 2000 and 2015, were tested for respiratory syncytial virus, adenovirus, influenza, or parainfluenza, and confirmed by fluorescent antibody (FA) or real-time polymerase chain reaction (RT-PCR) assay of nasopharyngeal aspirates...
2018: PloS One
https://www.readbyqxmd.com/read/29581879/transport-of-charged-small-molecules-after-electropermeabilization-drift-and-diffusion
#12
Esin B Sözer, C Florencia Pocetti, P Thomas Vernier
Background: Applications of electric-field-induced permeabilization of cells range from cancer therapy to wastewater treatment. A unified understanding of the underlying mechanisms of membrane electropermeabilization, however, has not been achieved. Protocols are empirical, and models are descriptive rather than predictive, which hampers the optimization and expansion of electroporation-based technologies. A common feature of existing models is the assumption that the permeabilized membrane is passive, and that transport through it is entirely diffusive...
2018: BMC Biophysics
https://www.readbyqxmd.com/read/29579902/plum-prunus-salicina-peel-and-pulp-microparticles-as-natural-antioxidant-additives-in-breast-chicken-patties
#13
Maria Florencia Basanta, Sergio Anibal Rizzo, Natalia Szerman, Sergio Ramón Vaudagna, Adriana Maria Descalzo, Lia Noemi Gerschenson, Carolina Daiana Pérez, Ana Maria Rojas
Fiber microparticles (MPCs) separately obtained from peel and pulp of Japanese plum residues contained co-extracted β-carotene, lutein, and α- and γ-tocopherols, as well as polyphenols (cyanidins, quercetin derivatives, pentameric proanthocyanidins). Peel and pulp MPCs were then separately evaluated as natural antioxidant additives (2.0% w/w level) in raw breast chicken patty, susceptible to oxidation. Their effect on technological properties was also analyzed. MPCs reduced in 50% the formation of thiobarbituric acid reactive substances (TBARS) in raw patties during 10-days storage at 4...
April 2018: Food Research International
https://www.readbyqxmd.com/read/29579825/renal-transplantation-in-second-level-private-hospitals-in-the-state-of-mexico
#14
A Armenta Bautista, A Armenta Álvarez, E Mancilla Urrea, G Mondragón, S Aburto Mendoza, R Pérez Mendoza, R González González, M S Escalona Delgado, R Arroyo Borrego, C A Vilchis Canales, C Rocio Lagunas, I Santana Serrano, H Armenta Álvarez, D Valle Ponce
BACKGROUND: Kidney transplantation (KT) is the replacement therapy of choice in patients with end-stage renal disease (ESRD). Here we show a cohort of kidney transplant recipients from the period of May 1994 to May 2016 in 2 2nd-level private hospitals from the city of Toluca in the state of Mexico. METHODS: We checked the clinical files of all the patients that received KT in the period of study. RESULTS: We report 25 KT: 23 performed in Sanatorio Toluca and 2 in Sanatorio Florencia; 16 (64%) male and 9 (26%) female; mean age 36...
March 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29577038/searching-for-bacterial-biofilm-in-recurrent-cholangitis-in-primary-sclerosing-cholangitis-a-case-presentation-and-introduction-of-an-unexplored-disease-mechanism
#15
Alyssa Y Choi, Florencia Jalikis, Maria Westerhoff, Sarag Boukhar, Elinor Pulcini, Chris Damman, Lei Yu
Inflammation and fibrosis of the bile ducts are the defining pathological characteristics of primary sclerosing cholangitis (PSC). A previously unexplored mechanism for recurrent cholangitis, one of PSC's most common presentations, is bacterial colonization of the biliary epithelium in the form of biofilm, which may confer resistance to antibiotics and host phagocytic machinery. The aim of the current study was to assess whether bacteria could be seen on the liver explant and whether they organized in the form of biofilm...
March 28, 2018: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/29571584/using-genetic-and-epigenetic-markers-to-improve-differential-diagnosis-of-prostate-cancer-and-benign-prostatic-hyperplasia-by-noninvasive-methods-in-mexican-patients
#16
Beatriz E Sánchez, Adolfo Aguayo, Braulio Martínez, Fabiola Rodríguez, Melanie Marmolejo, Yevgeniya Svyryd, Leonora Luna, Luis A Muñoz, Miguel A Jiménez, Mariano Sotomayor, Florencia Vargas V, Osvaldo M Mutchinick
BACKGROUND: Prostate cancer (PCa) is the most common malignancy in Mexican men. Serum prostate-specific antigen (PSA) is the usual noninvasive biomarker used for its detection. Its low specificity can increase the number of unnecessary prostate biopsies and the incidence of unpleasant complications for patients. The androgen-receptor gene (AR-CAG) repeat length and the percentage of promoter methylation (PPM) of genes glutathione-S-transferase P1 (GSTP1) and Ras association domain family 1 isoform A (RASSF1A) improve PCa detection...
February 27, 2018: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29563916/old-yellow-enzyme-from-trypanosoma-cruzi-exhibits-in-vivo-prostaglandin-f-2-%C3%AE-synthase-activity-and-has-a-key-role-in-parasite-infection-and-drug-susceptibility
#17
Florencia Díaz-Viraqué, María Laura Chiribao, Andrea Trochine, Fabiola González-Herrera, Christian Castillo, Ana Liempi, Ulrike Kemmerling, Juan Diego Maya, Carlos Robello
The discovery that trypanosomatids, unicellular organisms of the order Kinetoplastida, are capable of synthesizing prostaglandins raised questions about the role of these molecules during parasitic infections. Multiple studies indicate that prostaglandins could be related to the infection processes and pathogenesis in trypanosomatids. This work aimed to unveil the role of the prostaglandin F2 α synthase Tc OYE in the establishment of Trypanosoma cruzi infection, the causative agent of Chagas disease. This chronic disease affects several million people in Latin America causing high morbidity and mortality...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29561853/the-audiovisual-structure-of-onomatopoeias-an-intrusion-of-real-world-physics-in-lexical-creation
#18
Alan Taitz, M Florencia Assaneo, Natalia Elisei, Mónica Trípodi, Laurent Cohen, Jacobo D Sitt, Marcos A Trevisan
Sound-symbolic word classes are found in different cultures and languages worldwide. These words are continuously produced to code complex information about events. Here we explore the capacity of creative language to transport complex multisensory information in a controlled experiment, where our participants improvised onomatopoeias from noisy moving objects in audio, visual and audiovisual formats. We found that consonants communicate movement types (slide, hit or ring) mainly through the manner of articulation in the vocal tract...
2018: PloS One
https://www.readbyqxmd.com/read/29560835/how-argentina-is-training-their-mental-health-residents-to-face-its-silver-tsunami
#19
Sergio A Strejilevich, Florencia Vallejos, Julian Bustin
In low- and middle-income countries, there is an increase in the percentage of aging population similar to or greater than that of high-income countries (World Population Ageing 1950-2050, UN, 2001). The emerging health and economical challenges due to these demographic changes will have to be addressed by their health systems. In this context, an adequate training of available human resources in geriatric psychiatry/psychogeriatrics (GP/PG) should be an essential step to meet those challenges.
March 21, 2018: International Psychogeriatrics
https://www.readbyqxmd.com/read/29557627/-atypical-presentation-of-a-giant-prolactinoma-in-a-15-year-old-boy
#20
Elisa Vaiani, Cintia Morales, Florencia Soto, Yeny Blanco, Carlos Rugilo, Marta Ciaccio, Alicia Belgorosky
Giant prolactinomas are rare pituitary adenomas characterized by their great local invasion. In this paper, we report a 15-year-old male with left retro-ocular pain and ipsilateral exophthalmos of 4 months of evolution, secondary to a tumour in the base of the skull that invaded the orbit. Hormonal studies revealed serum prolactin of 6913,7 ng/ml (normal value < 20), confirming the diagnosis of giant prolactinoma. The patient started treatment with the dopaminergic agonist cabergoline in increasing doses...
April 1, 2018: Archivos Argentinos de Pediatría
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